My fantasy would be reading a classified ad which is asking for subjects in medical research. So I call the number, and the voice who answers is a cute, young sounding girl who tells me the address to come to. When I get to the building the girl instructs me to its a nice doctors office, sitting off the road almost by itself. I go in and see a girl who is beautiful sitting behind the desk is defiantly the girl who answered the phone. She is gorgeous. She has a Liberian look, dark hair, nice chest, she looks like Sarah Palin. I figure I'm the only one who has called because she looks at me and Say's we've been expecting you, and she pulls out a clipboard with a waiver attached which I read over and sign. When I complete the form the young girl leads me through a door and takes me into a room where she tells me to strip down and change into a paper gown that she sits down on a gyn table that's in the center of the room, and she walks out. After she leaves I start to wonder what I've gotten myself into. I hear muffled panting through the door. However I'm already in the room so I go ahead and change into the gown and sit down on the gyn table, noticing that the stirrups have leather straps on them, and that there are leather wrist straps as well. After a short wait another bombshell woman walks in. This one a blonde. She looks me over and says nice to meet you I'm Dr. _____, but you can call me Dr. F. So I ask Dr. F what medical experiments she does and she simply smiles and says you'll find out with a smile, and then she tells me to say down on the table and put my feet into the stirrups. When she buckles me into the leather restrants I don't really say anything, but when she pulls out KY jelly I ask her whats going to happen, she tells me that everything will be fine. So i sit back and keep quite because I'm at her disposal anyways. Dr. F lubes up her gloved finger and probes my anus. Then she pulls out her finger and tells me today will be an interesting experience, then walks out. After a while the receptionest walks in with a large enema bag and hangs it on a hook from the ceiling which I hadn't noticed until she put the bag up there, and then she inserts the hose and starts the flow telling me everything is going according to standard procedure and she thanks me for being so cooperative. When the enema is about half way through, she stops it and asks if everything is fine and I just nodd my head in a yes motion and she starts the flow again until the bag is empty, then she walks over to a cabinet and pulls out a butt plug and tells me that I'm going to hold the enema until Dr. F comes back in. So she shoves it in me and exits. After what seems like an eternity Dr. F walks in and pulls the plug and tells me that I can empty into a bucket that she grabbed when she walked in, and after getting the majority of water she walks into the hall way and rolls in a cart with what looks to be a tens unit, and she tells me the first test will be to find out if she can cause me to have a prostate orgasm. She prods me with something that I can't distinguish after a while I don't feel like anything is going to happen so I say something and Dr. F turns up the intensity which makes me cum all over my paper gown. Then she shuts the machine off and simply smiles at me, and says whats the matter I thought nothing was going to happen. Then she asks me if she unhooks the restrants if I'll be a good boy and I say yes, so she unhooks me and leads me to a room down the hall. This room looks like a cow milking factory with all the pumps they have coming down from the ceiling, and Dr. F tells me this room tests how much stimulation the penis can take, so she sits me down in a chair and restrains me, and when I ask her why she tells me I'll find out why soon enough, and she proceeds to hook one of the utter sucking lookings devices up to my penis which she lubed, this machine feels just like oral sex, and it does not take very much at all the make me orgasm, and then she sees this and I ask if shes going to stop it, and she tells me that I probably wouldn't have sat still if she didn't restrain me. This machine just keeps going until it I have two more orgasms. By the time she flips off the switch I feel as though I'm going to pass out. Then she takes off the restraints and tells me that I did well. After letting me catch my breath she asks me if I'm ready for the third and last experiment of the day, and with worry in my voice I tell her yes.